[go: up one dir, main page]

WO2018167845A1 - Empilement de cellules électrochimiques planes - Google Patents

Empilement de cellules électrochimiques planes Download PDF

Info

Publication number
WO2018167845A1
WO2018167845A1 PCT/JP2017/010210 JP2017010210W WO2018167845A1 WO 2018167845 A1 WO2018167845 A1 WO 2018167845A1 JP 2017010210 W JP2017010210 W JP 2017010210W WO 2018167845 A1 WO2018167845 A1 WO 2018167845A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrochemical cell
separator
cell
cell stack
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/010210
Other languages
English (en)
Japanese (ja)
Inventor
吉野　正人
理子 犬塚
隆利 浅田
憲和 長田
啓輔 中澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
Original Assignee
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Energy Systems and Solutions Corp filed Critical Toshiba Corp
Priority to JP2019505562A priority Critical patent/JP6926193B2/ja
Priority to PCT/JP2017/010210 priority patent/WO2018167845A1/fr
Publication of WO2018167845A1 publication Critical patent/WO2018167845A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • Embodiments of the present invention relate to a flat electrochemical cell stack.
  • Fuel cells that convert chemical energy to electrical energy by electrochemically reacting hydrogen and oxygen are drawing attention. Fuel cells have high energy use efficiency and are being developed as large-scale distributed power sources, household power sources, and mobile power sources.
  • Fuel cells are classified into solid polymer type, phosphoric acid type, molten carbonate type, solid oxide type, etc., depending on the temperature range and the type of material and fuel used.
  • SOFC solid oxide fuel cell
  • a high-temperature steam electrolysis method in which hydrogen is produced by a solid oxide electrolysis cell (SOEC) by utilizing the reverse reaction of SOFC has been developed.
  • a cell which is the minimum constituent unit of SOFC and SOEC, is generally composed of an electrolyte and an electrode.
  • the solid oxide electrolyte has oxygen ion conductivity.
  • the electrolyte of the solid oxide for example, dense stabilized zirconia, perovskite oxide, a ceria-based solid solution molded body, or the like is used.
  • the electrode taking SOFC as an example, it can be roughly divided into a fuel electrode and an air electrode.
  • H 2 that is the fuel gas and oxygen ions that have moved through the electrolyte react electrochemically to generate H 2 O and electrons (e ⁇ ).
  • oxygen in the air takes in electrons (e ⁇ ), generates oxygen ions by an electrochemical reaction, and these move to the electrolyte.
  • a mixed sintered body (cermet) of metal and solid oxide is generally used for the fuel electrode.
  • Ni—YSZ yttria stabilized zirconia
  • Ni—ScSZ scandia stabilized zirconia
  • a perovskite oxide or an oxide obtained by substituting a part of these sites is generally used for the air electrode.
  • LaSrMn oxide, LaSrCo oxide, LaSrCoFe oxide, LaSrFe oxide, and the like can be given.
  • a mixture with a solid oxide used for the electrolyte is also used, and examples thereof include LSM-YSZ, LSM-ScSZ, LSC-SDC, and LSC-GDC.
  • the cell is at least a laminate of an air electrode, an electrolyte, and a fuel electrode.
  • Different materials are used for the air electrode, the electrolyte, and the fuel electrode.
  • the air electrode and the fuel electrode are porous, and different gases are supplied to the air electrode and the fuel electrode with a dense electrolyte as a boundary.
  • the air electrode and the fuel electrode are electrical conductors, and the electrolyte is an ionic conductor that does not conduct electricity.
  • the cell shape includes a flat plate type, a cylindrical type, and a cylindrical flat plate type.
  • a flat cell has a shape in which an air electrode, an electrolyte, a fuel electrode, and the like are stacked in a flat plate shape.
  • a collection of a plurality of these cells is generally called a stack.
  • the stack is a stack of multiple flat cells, supplying different gases to the air electrode and fuel electrode of each cell, and the cells can be connected electrically in series. It has a simple structure.
  • the cells are separated from each other by a separator, and the gas for each cell is separated by the separator. Since the separator is conductive, it also plays a role of electrical conduction between cells.
  • a gas supply / discharge flow path to each cell is generally formed in the separator.
  • the cell portion separates the fuel electrode and the air electrode by a dense electrolyte, while the other portions separate the atmosphere of adjacent cells by a dense separator. Further, the atmosphere of the fuel electrode and the air electrode of the same cell is isolated by closing a gap in a portion where the cell is not installed with a dense member.
  • the gas flowing in the stack is prevented from flowing out of the stack, the supply gas to the fuel electrode and the air electrode is prevented from mixing inside the stack, that is, the gas sealing property is improved. It has become a big issue.
  • methods using various sealing materials have been proposed.
  • the cell Since the cell has a dense electrolyte, it is possible to prevent mixing of the atmospheric gas in each of the fuel electrode and the air electrode. However, it is necessary to take measures against gas leakage in the stack components other than the cells. For example, it is necessary to seal a gap between a cell and a stack constituent member other than the cell, or a portion that supplies gas to the cell.
  • the problem to be solved by the present invention is to provide a flat plate electrochemical cell stack with improved gas sealability.
  • the flat plate electrochemical cell stack includes a flat solid oxide electrochemical cell and a conductive separator surrounding the electrochemical cell, and a plurality of stacked unit electrochemical cells; A frame-shaped seal portion disposed between the separator of the unit electrochemical cell and the separator of the adjacent unit electrochemical cell and surrounding the periphery of the electrochemical cell; and the separator of the unit electrochemical cell And an insulating part that is disposed between the separators of the adjacent unit electrochemical cells and that is at least partially positioned on the outer peripheral side of the seal part and is thinner than the seal part.
  • FIG. 1 is a diagram schematically illustrating a partial cross-sectional configuration of a flat plate electrochemical cell stack (hereinafter simply referred to as a stack) 100 according to an embodiment.
  • a stack a flat plate electrochemical cell stack
  • each component is shown in a disassembled state (with a space between the components) (the same applies to FIGS. 3 to 6 described later), but these components are stacked. It is integrally held under pressure.
  • the flat cell 101 constituting the stack 100 is an electrode-supported flat electrochemical cell.
  • the cell 101 has a laminated structure in which an electrolyte 103 made of a thin film is formed on a porous electrode support 102 and a counter electrode 104 is further formed on the electrolyte 103.
  • the electrode support 102 or the counter electrode 104 is a fuel electrode, and the other is an air electrode.
  • Conductive separators 105 and 106 are provided so as to surround the periphery of the cell 101, and the cell 101 is accommodated and supported in these. Between the electrode support 102 and the separator 106, a current collector (not shown) that electrically connects them is disposed. Further, a current collector (not shown) that electrically connects them is disposed between the counter electrode 104 and the adjacent separator 106.
  • the material of the separators 105 and 106 is a material that is dense and has conductivity even in the temperature range of 600 to 1000 ° C. that is the operating temperature, such as metal or ceramics. Moreover, as this material, a material having a thermal expansion coefficient close to that of the cell 101 is desirable.
  • the separator is configured by two separators 105 and 106 which are separate members will be described. However, the separators 105 and 106 may be formed as a single member.
  • the outer shape of the flat cell 101 is, for example, a quadrangular shape.
  • the separator 105 is configured in a rectangular frame shape so as to surround the periphery of the cell 101.
  • a square opening 105a is formed at the center of the separator 105, and the cell 101 is disposed in the opening 105a.
  • the outer shape of the separator 106 is, for example, a rectangular plate shape. Further, the separator 105 and the separator 106 are formed with through holes at corresponding positions, and a gas flow path 109 for flowing gas in the stacking direction is formed by these through holes.
  • the separator 105 and the separator 106 constitute a support body that accommodates and supports the cell 101 in the opening 105a.
  • These separators 105 and 106 and cell 101 constitute one unit chemical cell 110.
  • a plurality of these unit chemical cells 110 are stacked, and end plates 120 and the like are arranged at both end portions (upper end portion and lower end portion in FIG. 2) in the stacking direction. These are fastened and fixed by fastening means such as a plurality of bolts 111 and nuts 112.
  • fastening means such as a plurality of bolts 111 and nuts 112.
  • a sheet-like insulating member 107 formed in a frame shape is provided between the separator 105 and the separator 106 of the adjacent unit chemical cell 110.
  • the insulating member 107 is provided to prevent an electrical short circuit between the separator 105 and the separator 106 of the adjacent cell 101.
  • the insulating member 107 constitutes an insulating portion.
  • a sheet-like seal member 108 formed in a frame shape is provided inside the insulating member 107 between the separator 105 and the separator 106 of the adjacent unit chemical cell 110.
  • the seal member 108 is disposed along the peripheral edge of the cell 101.
  • the seal member 108 is disposed between the outer peripheral edge portion of the cell 101 and the inner peripheral edge portion of the separator 105.
  • the seal member 108 is disposed so as to surround the periphery of the gas flow path 109. That is, the seal member 108 is a sheet shape, and when viewed from the upper surface or the lower surface side, the outer shape is a substantially square shape, and a shape (frame shape) having a substantially square opening smaller than the outer shape of the cell 101 at the center. ).
  • An opening corresponding to the shape of the gas flow path 109 is provided at a portion corresponding to the gas flow path 109.
  • the seal member 108 constitutes a seal portion.
  • the seal member 108 is provided to prevent gas leakage from the gap between the cell 101 and the separators 105 and 106.
  • the seal member 108 is provided to insulate between the separator 105 and the separator 106 of the adjacent unit chemical cell 110.
  • the material of the insulating member 107 is not particularly limited, but a material having high electrical insulation (high electrical resistance) is desirable. Examples of this material include alumina, zirconia, silica, and a material containing at least these. The density is preferably dense, but may be porous.
  • the material of the seal member 108 is not particularly limited, but a material having high electrical insulation is desirable. Examples of this material include alumina, zirconia, silica, and a material containing at least these. As for the density, a dense one is desirable.
  • the material of the seal member 108 may be the same as the material of the insulating member 107.
  • the thicknesses of the insulating member 107 and the seal member 108 arranged in the same plane are different from each other. That is, the thickness of the insulating member 107 is smaller than the thickness of the seal member 108.
  • the insulating portion and the sealing portion are separated, and the thick sealing member 108 and the thin insulating member 107 are used, thereby increasing the surface pressure of the sealing portion with a simple structure.
  • the sealing performance can be improved.
  • a pressure is applied in the stacking direction to increase the surface pressure of the seal portion to perform sealing, but it is necessary to apply a very large pressure to increase the surface pressure over a wide area.
  • the insulating function and the sealing function are provided in one member, and the insulating sealing member 508 having a large surface area is connected to the separator 105 and the separator 106 of the adjacent unit chemical cell 110. When it is disposed between the two, it is necessary to apply a very large pressure to increase the surface pressure. For this reason, a surface pressure cannot fully be raised and a sealing performance may fall.
  • the insulating portion and the sealing portion are separated, and the thick sealing member 108 and the thin insulating member 107 are used, compared with the insulating sealing member 508 shown in FIG.
  • the surface area of the seal member 108 can be reduced, and the surface pressure can be easily increased. Thereby, a sealing performance can be improved.
  • a material that is porous at room temperature and becomes dense when exposed to high temperature in a compressed state can be used as the material of the seal member 108.
  • Pores that are porous at room temperature have high compressibility.For example, when there is a step at the end of the cell, if the pressure is applied in the stacking direction and the surface pressure is applied to the seal part, the step can be absorbed. It becomes possible. And when exposed to high temperature in the compressed state, it becomes dense and the sealing performance is improved.
  • the thickness of the sealing member 108 before and after being stacked and compressed is changed. That is, the thickness of the sealing member 108 after being stacked and compressed becomes thinner than that before compression. Therefore, the difference between the thickness of the seal member 108 and the thickness of the insulating member 107 is also reduced. In this case, it is sufficient that the thickness of the sealing member 108 is slightly larger than the thickness of the insulating member 107 after compression.
  • FIG. 3 is a diagram schematically showing a partial cross-sectional configuration of the stack 200 according to the second embodiment.
  • parts corresponding to those in FIG. 3 are corresponding to those in FIG.
  • a coating film 207 formed by previously coating an insulating material on one surface of the separator 106 (the lower surface in FIG. 3) is used as an insulating portion.
  • the coating film 207 is formed in a frame shape so as to surround the periphery of the seal member 108.
  • the material of the coating film 207 is not particularly limited, but a material having high electrical insulation is desirable. Examples of this material include alumina, zirconia, silica, and a material containing at least these.
  • the density is preferably dense, but may be porous.
  • the coating method is not particularly limited, and examples thereof include a wet method, a dry method, a physical method, and a chemical method.
  • the shape of the coating film 207 is not particularly limited, but may be provided at least in a portion that needs to be insulated.
  • the insulating portion is constituted by the coating film 207
  • the number of parts is reduced, the number of steps for stacking and assembling the stack 200 is reduced, and the insulating member and the seal member are overlapped during construction. Can be prevented. Furthermore, the occurrence of local electrical leakage can be suppressed.
  • FIG. 4 is a diagram schematically illustrating a partial cross-sectional configuration of the stack 300 according to the third embodiment.
  • parts corresponding to those in FIG. 4 are corresponding to those in FIG.
  • an end plate 120 or the like is installed to ensure the strength of the stack 300 and the like. In this case, it is necessary to perform insulation and gas sealing between the end plate 120 and the separator 106. For this reason, in the stack 300, the insulating member 107 and the sealing member 108 are disposed between the upper end plate 120 and the separator 106.
  • the insulating member 107 and the sealing member 108 having the same shape as those disposed between the separators 105 and 106 are provided between the end plate 120 and the separator 106.
  • a surface pressure is applied to the same portion of the stack 300, and a surface pressure is uniformly applied to each seal member 108 in the stacking direction, so that the sealing performance can be improved.
  • FIG. 5 is a diagram schematically showing a partial cross-sectional configuration of the stack 400 according to the fourth embodiment.
  • parts corresponding to those in FIG. 5 are corresponding to those in FIG.
  • a convex portion 401 having an area smaller than that of the seal member 108 is provided at a portion where the seal member 108 of the separator 106 contacts.
  • the convex portion 401 is formed in a frame shape along the shape of the seal member 108. As the shape of the convex portion 401, a shape having no sharp portion is desirable so that the sealing member 108 is not broken. In the stack 400 configured as described above, the surface pressure applied to the seal member 108 is further increased, and the sealing performance is improved.
  • the gas sealing performance can be improved.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

La présente invention concerne un empilement de cellules électrochimiques planes qui est pourvu : d'une pluralité de cellules électrochimiques unitaires qui sont stratifiées, et dont chacune comprend une cellule électrochimique plane à oxyde solide et un séparateur conducteur qui entoure la cellule électrochimique; une partie d'étanchéité de type cadre qui est disposée entre le séparateur d'une cellule électrochimique unitaire et le séparateur d'une cellule électrochimique unitaire adjacente de manière à entourer la cellule électrochimique; et une partie isolante qui est disposée entre le séparateur de la cellule électrochimique unitaire et le séparateur de la cellule électrochimique unitaire adjacente de telle sorte qu'au moins une partie de la partie isolante est positionnée à l'extérieur de la partie d'étanchéité, tout en présentant une épaisseur plus fine que la partie d'étanchéité.
PCT/JP2017/010210 2017-03-14 2017-03-14 Empilement de cellules électrochimiques planes Ceased WO2018167845A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019505562A JP6926193B2 (ja) 2017-03-14 2017-03-14 平板型電気化学セルスタック
PCT/JP2017/010210 WO2018167845A1 (fr) 2017-03-14 2017-03-14 Empilement de cellules électrochimiques planes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/010210 WO2018167845A1 (fr) 2017-03-14 2017-03-14 Empilement de cellules électrochimiques planes

Publications (1)

Publication Number Publication Date
WO2018167845A1 true WO2018167845A1 (fr) 2018-09-20

Family

ID=63523613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/010210 Ceased WO2018167845A1 (fr) 2017-03-14 2017-03-14 Empilement de cellules électrochimiques planes

Country Status (2)

Country Link
JP (1) JP6926193B2 (fr)
WO (1) WO2018167845A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4345955A1 (fr) * 2022-09-15 2024-04-03 Toshiba Energy Systems & Solutions Corporation Dispositif électrochimique
WO2025105416A1 (fr) * 2023-11-16 2025-05-22 日本特殊陶業株式会社 Cellule d'électrolyseur à oxyde solide et son utilisation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217959A (ja) * 2008-03-07 2009-09-24 Tokyo Electric Power Co Inc:The 平板型固体酸化物形燃料電池スタック
JP2012109074A (ja) * 2010-11-16 2012-06-07 Fuji Electric Co Ltd 燃料電池
JP2014060113A (ja) * 2012-09-19 2014-04-03 Toshiba Corp 電気化学装置
JP2016146253A (ja) * 2015-02-06 2016-08-12 株式会社東芝 燃料電池スタック
JP2016186902A (ja) * 2015-03-27 2016-10-27 東邦瓦斯株式会社 固体酸化物形燃料電池

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217959A (ja) * 2008-03-07 2009-09-24 Tokyo Electric Power Co Inc:The 平板型固体酸化物形燃料電池スタック
JP2012109074A (ja) * 2010-11-16 2012-06-07 Fuji Electric Co Ltd 燃料電池
JP2014060113A (ja) * 2012-09-19 2014-04-03 Toshiba Corp 電気化学装置
JP2016146253A (ja) * 2015-02-06 2016-08-12 株式会社東芝 燃料電池スタック
JP2016186902A (ja) * 2015-03-27 2016-10-27 東邦瓦斯株式会社 固体酸化物形燃料電池

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4345955A1 (fr) * 2022-09-15 2024-04-03 Toshiba Energy Systems & Solutions Corporation Dispositif électrochimique
WO2025105416A1 (fr) * 2023-11-16 2025-05-22 日本特殊陶業株式会社 Cellule d'électrolyseur à oxyde solide et son utilisation

Also Published As

Publication number Publication date
JP6926193B2 (ja) 2021-08-25
JPWO2018167845A1 (ja) 2019-07-18

Similar Documents

Publication Publication Date Title
US20120178012A1 (en) Sealing member for solid oxide fuel cell and solid oxide fuel cell employing the same
JP6118230B2 (ja) 燃料電池スタック
KR20110059982A (ko) 연료전지 스택용 엔드플레이트
CN100438187C (zh) 高温燃料电池系统
KR20110059990A (ko) 연료전지 스택용 엔드플레이트의 제조 방법
JP7368402B2 (ja) 電気化学反応単セルおよび電気化学反応セルスタック
KR20100030709A (ko) 연료전지 스택용 분리판
JP6926193B2 (ja) 平板型電気化学セルスタック
JP6702585B2 (ja) 平板型電気化学セルスタック
KR102745793B1 (ko) 금속지지형 전기 화학 소자용의 전극층 부착 기판, 전기 화학 소자, 전기 화학 모듈, 고체 산화물형 연료 전지, 및 제조 방법
JP7263269B2 (ja) 固体酸化物形電気化学スタック
US20170358805A1 (en) Structure of fuel cell
JP2013257989A (ja) 固体酸化物形燃料電池
JP2019516214A (ja) 平板型固体酸化物燃料電池
KR101423614B1 (ko) 연료전지용 막전극접합체
JP6637156B2 (ja) 平板型電気化学セル
JP7522679B2 (ja) 電気化学反応単セルおよび電気化学反応セルスタック
JP7273694B2 (ja) 電気化学セルスタック
JP2012109074A (ja) 燃料電池
JP5607771B2 (ja) 固体酸化物形燃料電池スタックとその製造方法
JP6818870B2 (ja) 電気化学セルスタック
KR20180036281A (ko) 고체 산화물 연료전지
JP5727567B2 (ja) 固体酸化物形燃料電池、固体酸化物形燃料電池スタックおよびスペーサ
JP2012084468A (ja) 固体電解質形燃料電池
JP2025097563A (ja) 電気化学反応単セルおよび電気化学反応セルスタック

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17900336

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019505562

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17900336

Country of ref document: EP

Kind code of ref document: A1